This is a list of states in the Holy Roman Empire beginning with the letter Q:
| Name | Type | Imperial circle | Imperial diet | History |
|---|---|---|---|---|
 Quadt
|
Lordship | n/a | n/a | 1262: First mentioned 14th Century: Partitioned into Quadt-Rode and Quadt-Eller |
| Quadt-Buschfeld
|
Lordship 1620: Barony |
n/a | n/a | 1447: Eberhard of Quadt acquired Buschfeld 1451: Buschfeld to John William 1498: Acquired Wickrath 1518: Partitioned into Quadt-Wickrath, Quadt-Alsbach and itself 1620: HRE Baron 1757: Extinct; to Leyen-Hohengeroldseck |
| Quadt-Hüchtenbruck
|
Lordship | n/a | n/a | 1716: Renamed from Quadt-Wickrath-Zoppenbroich after adoption as heir of Hüchtenbruck 1796: To France 1815: To Prussia |
| Quadt-Kreuzberg
|
Lordship | n/a | n/a | 1659: Established when John Arnold acquired Kreuzberg 1697: Extinct; to Cologne |
| Quadt-Landskron
|
Lordship 15th Century: Barony |
n/a | n/a | 1441: Established when Lothar acquired 1/2 of Oberwinter, Landskron and Tomburg 1622: Landskron sold to Eynenberg 1765: Extinct |
| Quadt-Rode
|
Lordship | n/a | n/a | 14th Century: Partitioned from Quadt 1441: Side line Quadt-Landskron founded 1447: Side line Quadt-Buschfeld founded 15th Century: Rode sold to Plettenberg |
| Quadt-Wickrath
|
Lordship | Low Rhen | WF | 1518: Partitioned from Quadt-Buschfeld 1566: Acquired Zoppenbroich 1599: Partitioned into Quadt-Wickrath-Schwanenberg and Quadt-Wickrath-Zoppenbroich |
| Quadt-Wickrath-Schwanenberg Count of Quadt in Wykradt and Isny |
Lordship 1664: Barony 1752: County |
Low Rhen | WF | 1599: Partitioned from Quadt-Wickrath 1664: HRE Baron 1752: HRE Count 1796: To France 1803: Compensated with Isny and St George's Abbey 1806: To Württemberg |
| Quadt-Wickrath-Zoppenbroich
|
Lordship | n/a | n/a | 1599: Partitioned from Quadt-Wickrath 1659: Side line Quadt-Kreuzberg founded 1716: Renamed to Quadt-Hüchtenbruck |
 Quedlinburg
|
Abbacy | Upp Sax | RP | 936: Established with Imperial immediacy 966: HRE Princess of the Empire 1802: To Prussia 1807: To Westphalia 1815: To Prussia |
 Querfurt
|
Lordship | n/a | n/a | c. 950: First mentioned c. 1036: Partitioned into itself and Seeburg 1136: Acquired Burgraviate of Magdeburg 1178: Partitioned into Querfurt-Magdeburg and Querfurt-Querfurt 1418: Querfurt-Vitzenburg last extant line 1430: Beyernaumburg to Asseburg 1464: Sold Vitzenburg to Silmenitz 1496: Sold to the Archbishopric of Magdeburg 1506: Extinct |
| Querfurt-Beyernaumburg
|
Burgraviate | n/a | n/a | 1326: Partitioned from Querfurt-Querfurt 1384: Extinct; to Querfurt-Vitzenburg |
| Querfurt-Magdeburg
|
Burgraviate | n/a | n/a | 1178: Partitioned from Querfurt; Burgrave of Magdeburg 1270: Burgraviate of Magdeburg sold to Saxe-Wittenberg 1278: Partitioned into Querfurt-Rosenburg and Maidburg-Hardegg |
| Querfurt-Mansfeld
|
Burgraviate | n/a | n/a | 1229: Formed when Burchard IV inherited 1/2 of Mansfeld 1246: Renamed to Mansfeld |
| Querfurt-Mühlheim-Tannroda
|
Burgraviate | n/a | n/a | 1269: Partitioned from Querfurt-Querfurt 1392: Acquired Tannroda 1418: Extinct; to Vitzthum |
| Querfurt-Querfurt
|
Burgraviate | n/a | n/a | 1178: Partitioned from Querfurt 1229: Senior line Querfurt-Mansfeld formed 1269: Partitioned into Querfurt-Mühlheim-Tannroda and itself 1326: Partitioned into Querfurt-Beyernaumburg and Querfurt-Vitzenburg |
| Querfurt-Rosenburg
|
Burgraviate | n/a | n/a | 1278: Partitioned from Querfurt-Magdeburg 1306: Extinct; to Maidburg-Hardegg |
| Querfurt-Vitzenburg
|
Burgraviate | n/a | n/a | 1326: Partitioned from Querfurt-Querfurt 1418: Renamed to Querfurt |